I've put together a walkthrough for The King of Chinatown as a sample walkthrough or Absolution guides. It's found here:
This was a pure assassination mission, so all I did here was name the various ways to kill the target. For missions that have more than one segment, we'll of course have to divide the walkthroughs into those segments. Also, in purely stealth-based mission walkthroughs, we'll have to include guides both on how to sneak through with disguises and with only the Suit (if it's possible). I'd also like to suggest that we keep Challenge solutions away from mission pages and only put them in walkthroughs so users only get them if they want to read them.
These are just my suggestions for future walkthrough writing. Please comment below and share your thoughts about this.